Free Infoblox NIOS-DDI-Expert Exam Dumps May 2026

Comprehensive and Detailed In-Depth

In NIOS Grid Manager (Data Management > DNS > Add Zone), administrators can create various zone types to manage DNS resolution. All listed options are valid:

A (Authoritative Zone): A zone where the Infoblox appliance is the authoritative source for DNS records (e.g., example.com with A, MX records). Correct.

B (Forward Zone): A zone configured to forward queries to external DNS servers (e.g., forwarding 'internal.com' to a corporate DNS). Correct.

C (Primary Zone): Often synonymous with Authoritative Zone in Infoblox, it's a master zone hosting original DNS data (distinct from secondary zones). Correct.

D (Delegation): A zone delegated to another name server (e.g., 'sub.example.com' delegated to different NS records). Correct.

Clarification: In NIOS, 'Authoritative' and 'Primary' are sometimes used interchangeably, but both are options in the Add Zone wizard, alongside Forward and Delegation zones.

Practical Example: In an INE lab, you might add an Authoritative Zone for 'lab.com,' a Forward Zone for external lookups, and a Delegation for a subdomain, testing DNS troubleshooting across these types.

Comprehensive and Detailed In-Depth

In an HA pair, the passive node stays synchronized with the active node to ensure seamless failover. This synchronization uses bloxSync, a proprietary Infoblox protocol that securely transfers database updates (e.g., DNS records, DHCP leases) between the HA pair members over an SSL-encrypted connection. The active node, being the operational member, directly provides these updates to the passive node. The Grid Master handles Grid-wide sync, but within an HA pair, the active node is the source. Options A and B misrepresent the mechanism (it's not a traditional VPN), and Option D incorrectly attributes the sync to the Grid Master. This is a critical HA troubleshooting topic in the INE course.